Seiko Cal. 4521 - 716

This Solar model from 1966 features a 43mm Gold-Plated case. Powered by the 4521 caliber with 24j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-fe4ffa399618]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1966

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